MSS40-1200 Discrete Semiconductor Products

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Thyristors - SCRs - Modules

The MSS40-1200 is a type of thyristor module, often called SCRs (silicon controlled rectifiers). The thyristor module is a module that combines several thyristors controlled to act like a large thyrite (thyristor) with the desired characteristics. These thyristors can be arranged in different combinations depending on the desired application and performance criteria.

Application field

The MSS40-1200 is particularly suited for AC current applications up to 1200 amps. They are specifically designed for use in areas such as power conditioning, power pumping, speed control of motors, welding machines, solar pumps, traction controls, and electric crane control. In addition, these modules are well suited for general power control and rectification of DC voltage up to a 1000 volts. They can also be used in various types of high-power applications such as circuit breakers, welding machines, servo-motor controls, motor drives, and electrical relays.

Working principle

Thyristor modules are composed of several thyristors connected in parallel. A thyristor is a semiconductor switch which features three terminals: the anode (A), the cathode (K) and the gate (G). When a current passes through the anode and the cathode, a current is induced into the gate and the thyristor switches from OFF to ON state. This process is called triggering. This type of switch has the powerful advantage of providing an abrupt change in its state with very low voltage control.

A MSS40-1200 module is a combination of several thyristors connected in parallel. The modules feature several thyristors with varying ratings and specifications, providing precise and precise power control. Each thyristor is triggered in the same way, usually using their sequencer with a logic signal. When the thyristor reaches its precise triggering voltage, it switches from the OFF to the ON state, and an output current is produced. This way, the overall output power of the module can be accurately and precisely controlled.

In some applications, the MSS40-1200 modules are capable of rectifying AC input power into DC power output. This type of module requires an external rectifier, typically a diode bridge, to convert the AC input into the DC output. The thyristors in the module are then triggered and turned ON at precise points, creating the desired DC output.

The MSS40-1200 thyristor modules are widely used in various industrial and commercial applications for precise and precise power control. By combining the advantages of thyristors and their associated control circuits, these modules can provide a wide range of output power, from a few watts up to hundreds of kilowatts and beyond. They are also very reliable, with a typical MTBF (mean time between failures) of up to one hundred years or more.

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